pyqt多窗口之间的相互调用方法-创新互联

* 在编程开发中，一个程序不可避免的需要多窗口操作来实现具体的功能。

实现此功能的基本步骤（以三个窗口为例，使用主窗口调用其它两个窗口）

# 主窗口
from PyQt5 import QtCore, QtGui, QtWidgets
 
class Ui_MainWindow(object):
  def setupUi(self, MainWindow):
    MainWindow.setObjectName("MainWindow")
    MainWindow.resize(800, 600)
    self.centralwidget = QtWidgets.QWidget(MainWindow)
    self.centralwidget.setObjectName("centralwidget")
 
    self.pushButton = QtWidgets.QPushButton(self.centralwidget)
    self.pushButton.setGeometry(QtCore.QRect(70, 180, 75, 23))
    self.pushButton.setObjectName("pushButton")
 
    self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)
    self.pushButton_2.setGeometry(QtCore.QRect(250, 180, 75, 23))
    self.pushButton_2.setObjectName("pushButton_2")
 
    MainWindow.setCentralWidget(self.centralwidget)
    self.menubar = QtWidgets.QMenuBar(MainWindow)
    self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 23))
    self.menubar.setObjectName("menubar")
    MainWindow.setMenuBar(self.menubar)
    self.statusbar = QtWidgets.QStatusBar(MainWindow)
    self.statusbar.setObjectName("statusbar")
    MainWindow.setStatusBar(self.statusbar)
 
    self.retranslateUi(MainWindow)
    QtCore.QMetaObject.connectSlotsByName(MainWindow)
 
  def retranslateUi(self, MainWindow):
    _translate = QtCore.QCoreApplication.translate
    MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
    self.pushButton.setText(_translate("MainWindow", "打开窗口1"))
    self.pushButton_2.setText(_translate("MainWindow", "打开窗口2 "))
 
# 窗口1
class Ui_Dialog(object):
  def setupUi(self, Dialog):
    Dialog.setObjectName("Dialog")
    Dialog.resize(400, 300)
    self.buttonBox = QtWidgets.QDialogButtonBox(Dialog)
    self.buttonBox.setGeometry(QtCore.QRect(30, 240, 341, 32))
    self.buttonBox.setOrientation(QtCore.Qt.Horizontal)
    self.buttonBox.setStandardButtons(QtWidgets.QDialogButtonBox.Cancel|QtWidgets.QDialogButtonBox.Ok)
    self.buttonBox.setObjectName("buttonBox")
    self.label = QtWidgets.QLabel(Dialog)
    self.label.setGeometry(QtCore.QRect(140, 100, 54, 12))
    self.label.setObjectName("label")
 
    self.retranslateUi(Dialog)
    self.buttonBox.accepted.connect(Dialog.accept)
    self.buttonBox.rejected.connect(Dialog.reject)
    QtCore.QMetaObject.connectSlotsByName(Dialog)
 
  def retranslateUi(self, Dialog):
    _translate = QtCore.QCoreApplication.translate
    Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
    self.label.setText(_translate("Dialog", "这是窗口1"))
# 窗口2
 
class Ui_Form(object):
  def setupUi(self, Form):
    Form.setObjectName("Form")
    Form.resize(400, 300)
    self.label = QtWidgets.QLabel(Form)
    self.label.setGeometry(QtCore.QRect(140, 140, 54, 12))
    self.label.setObjectName("label")
 
    self.retranslateUi(Form)
    QtCore.QMetaObject.connectSlotsByName(Form)
 
  def retranslateUi(self, Form):
    _translate = QtCore.QCoreApplication.translate
    Form.setWindowTitle(_translate("Form", "Form"))
    self.label.setText(_translate("Form", "这是窗口2"))
 

另外有需要云服务器可以了解下创新互联scvps.cn，海内外云服务器15元起步，三天无理由+7*72小时售后在线，公司持有idc许可证，提供“云服务器、裸金属服务器、高防服务器、香港服务器、美国服务器、虚拟主机、免备案服务器”等云主机租用服务以及企业上云的综合解决方案，具有“安全稳定、简单易用、服务可用性高、性价比高”等特点与优势，专为企业上云打造定制，能够满足用户丰富、多元化的应用场景需求。